Trireme

Note: Size: 35.8 m long overall from the stern fan to the ram tip (the hull is 32 m at the gunwale), 3.6 m hull beam and about 5 m across the outriggers, about 10.2 m across the oar blades, and 12.0 m tall to the masthead. The gunwale is 2.15 m above the keel bottom amidships and the fighting deck about 3 m. Origin: x is centred on the centreline, y = 0 is the keel bottom, z is centred on the overall length, and the ram faces +Z. No water is included; a waterline about 0.8 m up suits it, which is where the oar blades reach. The GLB has 5,330 triangles in 74 meshes, merged per part and colour, across 67 named parts (hull, keel and stem post, ram, bow eyes, outrigger, fighting deck, aphlaston, mast and yard, sail, rigging, 54 oars and 2 steering oars). The oar count is stylised: 9 a tier a side instead of the historical 27–31, so the banks stay readable. It holds one baked 4 s clip, scene-motion, with two rowing strokes. Each oar node sits at its thole (outrigger edge for the thranite tier, hull ports for the zygite and thalamite tiers) and turns there with Euler YZX: droop about the fore-aft axis, sweep about the vertical. Each steering oar node sits at its quarter and its local +Y is the shaft axis it turns about. Nothing else moves. All angles are whole-cycle sines, so the loop closes exactly. The exporter writes the static node pose at the t = 2 s frame, so un-animated imports show the oars mid-stroke. Every material is named exactly after a kit palette colour. The exporter writes one material per mesh, so names repeat: recolour by name. The ram uses terracotta as its bronze, since the kit palette has no metal colour. paintedOrBareMarble (the kit knob "Painted or bare marble") controls the ship paint over bare wood. At 0, everything above the pitch-black hull is bare dark wood. The paint then returns in steps: aegean blue outrigger from 0.2, painted eyes from 0.35, terracotta wale, deck rails, proembolion and aphlaston from 0.5, and aegean blue sail borders and a light-blue aphlaston from 0.75. Params are baked at their defaults and only change geometry when the scene is rebuilt in the viewer. oarsPerTier sets the oar count, stroke sets the rowing amplitude (0 holds the oars still), and sailSet brails the sail up to the yard. Only the defaults were rendered by three-check; the param extremes were reasoned through in code but not captured. Fix rounds: (1) the pale deck and oars vanished against the light stage ground, so they became dark wood, and the eyes were enlarged; (2) the hero was re-aimed lower, because the mast lifts the bounds centre and pushed the ram into the toolbar. In the 390x844 portrait capture the ram tip touches the left edge. glb-lint: 0 errors and 5 heuristic warnings: the material count and duplicate materials (both from per-mesh materials), deliberate nesting of hull bands and eyes, outrigger/mast/rigging flagged as detached though they sit on the hull and deck, which belong to other parts, and the 12 m height against a 1 m reference, which is the real scale. The verdict reads UNVERIFIED only because no host requirements contract was supplied. plan-check rejects the hyphens in the slug-based part ids this library requires; a de-hyphenated copy passes. three-check accepts those ids, and the GLB reload preserved every part id.